MIDI Guitar 3 stops tracking on Mac M1

Hello everyone! Got a license for Midi Guitar 3 and using the standalone beta on a Mac Mini M1. I am currently on the latest beta (3.0.68) but had the same issue with previous beta versions as well.

The basic way I use it is to only add an Essentials→MIDI OUTPUT block as virtual midi, then I read its midi output into Studio One to use.

Everything seems to work for a few mins to an hour, after which though MG3 just…stops tracking. There’s no way to ‘wake it up’, except closing the standalone and restarting it.

Any ideas or pointers? Anyone having a similar issue?

Edit: from the moment it happens, if I try to open the LOG, I only get a blank page instead of the usual log.

I haven’t come across this before – currently testing to see if I can duplicate.

Thank you! The order of operations in case it helps:

-Start Studio One, add a midi track, set the input to the virtual midi channel, add virtual instrument (last time it was a Kontakt 8 instrument but that shouldn’t change the issue, but anyway)

-Start standalone MG3, add a MIDI OUTPUT block set to the virtual midi channel

Everything starts tracking, MG3 passes the data correctly to the channel, Studio One reads it. At this point, I can either minimise MG3 or just put Studio One in the foreground and start recording or just playing around.

After a while, sound stops completely - I go check in the MG3 instance, which is still fully responsive as UI goes, but no tracking happens. No way to restart tracking except restarting the MG3 app. The LOG page becomes blank.

It looks to me like the tracking module of the app is internally crashing, and so that opening the LOG ui results in a non completed code path (that would indeed show the log).

Do you know where the actual log file is stored, so I could go see if there’s any track of the crash/issue after it happens?

Just know, I’m not a Studio One user, but my first impression was that this could be an MG3 thing – or a flaky audio interface USB connection, but that’s a bit hard to diagnose remotely.

Two hours ago, I opened MG3 standalone and loaded the factory preset MIDI GUITAR MINI with a microphone input active. Next, I activated a MIDI monitor to observe MG3’s MIDI data output and it’s still transmitting MIDI as I type this reply.

May I suggest you try the same to see if MG3 stops outputting MIDI when no DAW is active?

I’ve tried multiple times, and it still happens.

Interestingly, plugging the exact same setup onto MG3 for iPad (on an iPad Pro with funnily enough the same M1 chip) doesn’t show the same issue.

Im sometimes running an audio loop through it over night on a Mac mini M4 and never had issues.

But the latest iOS version actually had an update to a framework related to virtual midi and i’m crossing fingers this maybe fixed it for you and will carry over to the Mac.